. >> former congresswoman gabrielga gabrielle giffords argued for univer universal background checks on gun buyers, a ban on assault weapons and limits on high-compa high-capacity magazines. the national rifle association and supporters propose any type of new legislation but giffords pleaded for action now. >> you must act. be bold. be courageous. americans are counting on you. >> the debate on gun control will be back on the spotlight on monday when president obama heads to minneapolis for his first trip outside washington to pitch his proposal on reducing gun violence. >> she is making a list in the south bay and it's a list you don't want to be on. the sheriff in santa clara county says she has a list of people who own guns illegally. nbc bay area's damian trujillo has details and joins us live with reaction from the sheriffs. very interesting, damian. >> reporter: in fact, in some cases the sheriff has already taken action on some of these cases. this is called the armed and prohibited list and there are several hundred people who are on that list. some of them own assault rifle